Category: Science

Solutions to my last two maths problems, some sciencey pieces, a petition and some photographs.

INTRODUCTION

This post includes solutions to the problems I posed on Saturday, and a few other things from various sources.

SPACE STATION DODECAHEDRON

Here is the question as a reminder:

Here is the answer:

Here is a splendidly concise solution from David Vreken:

A VARIARION ON THE MALFATTI THEME

Here is the question:

Here is the answer:

In the 19th century Malfatti conjectured that the way to maximise the area of a triangle you could fill with three circles was to fill in the three largest circles that touch specifically two of the three sides. Although he was not alive to be humiliated it turned out that he was not merely wrong, his proposed solution has been proved not to work for a single triangle. The solution that always works is first put in the largest single circle that touches all three sides that you can, then fill in the largest circle you can in the remaining space and then do so again. In an equilateral triangle the difference is small, but in a long thin isosceles triangle it is quite substantial.

Here is Jeremy Galvagni’s published solution:

SCHOOL REFUSAL SYNDROME PETITION

This on the official site for petitions to the UK government, which means that you have be a UK citizen to sign it. Please click the screenshot below to sign and share it if so minded:

David Quammen, a good writer and a useful scientist to know about if you are planning an A to Z post, has a new book out on the subject of evolution, and Jerry Coyne of whyevolutionistrue has provided a very detailed review of it.

Finally, a letter to the Guardian signed by 60 well known environmental campaigners declaring their unwillingness to debate with climate change deniers, and why they are unwilling to do so. Below is the opening to the letter (please click to visit the original) and a list of signatories:

A mixed bag of bits and pieces from around the net and some of my own stuff, including photographs.

INTRODUCTION

Yes folks it is time for sharing post, including some of my own photographs. I have a lot of interesting stuff to share, starting with…

AN ANNIVERSARY OF SHAME

The bodytext of this section is in #RedInstead because it relates to Autism. To be exact, today marks 20 years since Andrew Wakefield published his “research” indicating a link between autism and vaccines. One impact his decision to go straight to the press without having his “research” peer reviewed first (it was badly flawed, and that is being kind) had was to cause measles to become a significant factor in parts of the UK as parents declined to have their children vaccinated. There can be no comparison between autism (a neurological DIFFERENCE – and don’t forget that different is not a synonym for lesser) and measles (a dangerous illness). However, in the minds of some parents, fear of autism has been sufficient to prevent them from vaccinating. Mr Wakefield has since decamped to the US (Texas to be exact), and he has just weighed in on an election in his new home, supporting the challenger against the current incumbent, republican Sarah Davis, who has supported vaccines. I am not USian, nor based in the area where this election is taking place, but if there is anything that could induce to me to vote for a republican it would the likes of Wakefield urging a vote for their opponent.

I finish this mini section back here in Norfolk, bringing up a topic close to my heart. Stagecoach are closing their King’s Lynn depot on April 30th (a king sized betrayal of Norfolk Green, the company they bought to get that depot) and will not be running any Norfolk routes thereafter. This leaves Konect, Lynx Buses, First, Sanders Coach Services and West Norfolk Community Transport to pick up the pieces. Our bus routes are very important to us, not least since thanks to Dr Beeching our county has no train routes to speak of. Thus I bring you a 38 Degrees petition calling on the council to work with these companies to ensure that the Coasthopper service (under threat of being entirely shut down) keeps running. Please sign and share the petition, via the screenshot below:

INTRODUCTION

Happy new year everyone. This post will give you a few hints as to what you can look forward to in 2018 on aspi.blog.

ASPI.BLOG STYLE GUIDE

Headings will generally be in a cycle that runs red/green’purple, although this is subject to variation in certain circumstances.

Body text will always be in black unless I am writing about autism, in which case I will use #RedInstead.

When sharing content from another site I will always link to the host site and the specific post and where possible will mention the author by name – such links will be a different colour from regular body text and will be both bold and underlined.

PUBLIC TRANSPORT

My next piece comes from Vox Political, who got direct from the person whose story it is, Paula Peters. The title of the piece “Bus driver subjects disability activist to humiliating discrimination” gives you a good idea of the nature of the story. British law on this matter is unequivocal – the bus driver is legally obliged to give wheelchair users priority over mothers with buggies (this courtesy of a court ruling in January). Given the completeness of the information Paula provides, the bus company in question have only one option open to them both legally and morally – they must sack the offending driver and must make sure that all their drivers are aware of their responsibilities to disabled passengers.

I started this post with a couple of science and nature related links, and now as we approach my photographs we are finishing where we started with stuff about nature, first of all Cindy Knoke with a wonderful post about a castle that has been dedicated to raptors, titled “Castle Rapture“.

With the last word before my photographs is Anna, who has recently posted part 13 of her amazing Paradise on Earth series, this time focussing on some of the smaller creatures who live in and around Trosa.

PHOTOGRAPHS

I will start this set of photographs with some of the smaller creatures I have recently captured, before finishing with some general pictures. These pictures were all taken yesterday.

If the illusion defeats you, you can find out where the circles are by going to the original post.

I finish this little section with a nod to the mathematical website Brilliant, which I am a regular visitor to (I am currently on a 64 day problem solving streak). As a sample here is a problem I solved today, rated at maximum difficulty by the site, pretty close to minimum by me:

You can look at solutions to this problem on the website, and I will reveal the answer on this blog tomorrow.

My second link is to the petitionsite, regarding a young women in El Salvador who having been raped and then had a miscarriage has then been jailed for 30 years due to the Catholic church influence anti-abortion laws of that country. The screenshot below is formatted as a link to take you to this petition to sign and if possible share it:

I finish this section on a lighter note, courtesy of whyevolutionistrue. This little piece titled “Where is North Korea? Some Americans have no idea” reminds us how unacquainted USians are with that area known as the rest of the world! Here is a screenshot of the opening paragraph:

PHOTOGRAPHS

I usually end my blog posts with some of my own photographs, but this photograph section has an additional feature – as a nod to the principal subjects of many of the photos that follow I offer you a musica prelude – Ottorino Respighi’s “The Birds”:

I did not notice the white bird on the far side of the river until I was editing this one – I think from the shape and colour that is a Little Egret but the image is not clear enough to be sure.

This squirrel is clearly an impressionist – and his meerkat is very good!

A mixed bag of a post, featuring local politics, libraries, autism, science, nature and photography.

INTRODUCTION

Welcome to this post in three parts. I am going to start by mentioning a local election that took place in my area today and in which I voted, then I will be mentioning an event that will be taking place at Gaywood Library (one of four such establishments in Norfolk that I visit at least semi-regularly) and I will finish up with some links to do with nature which will lead naturally to some of my photographs.

A FORCED BY-ELECTION

The election in which I voted today happened due to the laziness and arrogance of the incumbent councillor, who in spite of living just across the road from the Town Hall never attended meetings.

Four candidates were in the contest, in alphabetical order:

Rob Archer of the Green PartyFrancis Bone of the Labour PartyHelen Russell-Johnson of the Liberal DemocratsMike Taylor of the Conservative Party

In the ordinary course of events my inclination, especially given that the displaced councillor had been from the Labour Party would have been to vote for Mr Archer. However, the Liberal Democrat candidate happens to be my aunt. Therefore I voted for her.

I have started this post by covering this election for two reasons:

I want to make it clear to the Liberal Democrats that I voted for my aunt IN SPITE of the fact that she was representing them not because of it.

Also, just in case Mr Archer happens to be reading this, I hope he will take it as both explanation and apology for not having voted for him on this occasion.

I conclude this section of the post with a picture of my Political Compass certificate (it is free and does not very long to answer the questions which are used to assign your score):

THE GAYWOOD LIBRARY EVENT

The event at Gaywood Library is a Business Eveningat which I hope it will be possible to raise the subject of the Autism Hour, one of the National Autistic Society’s recent initiatives. I have already confirmed that I will be in attendance. Here are a couple of pictures to end this section:

SOME NATURE PIECES

My nature links naturally divide into three segments, with a few photographs of my own forming a fourth. We will start with…

A NEW DINOSAUR FIND

This story courtesy of scienmag.com is about a dinosaur that has been named Albertavenator Curriei (“Currie’s Alberta Hunter”, named in honour of Canadian paleontologist Dr Philip J Currie). Below is a representation of this creature by Oliver Demuth:

A change.org petitionaimed at the sponsors of Arsenal Football Club asking them to withdraw support and so help force Kroenke out, screenshot below:

For ordinary Arsenal fans my suggestions are simple – boycott all home matches until Kroenke goes, and if you are a season ticket holder return your ticket and demand a full refund, making it clear that you will return if and only if Kroenke is no longer involved with the club.

MORE ON THE FIGHT TO PROTECT TROSA NATURE

This morning I reblogged Part 4 of Anna’s series of “Paradise on Earth” posts highlighting the wildlife that can be seen around Trosa and the Tureholm Peninsula. Since then she has added yet another post to that series, and I include links below: